Gas-reversing valve



W. H. LAKE.

GAS REVERSING VALVE. APPLICATION FILED, AuGIIe. I92I.

39424;,3@ PatentedAug. 8, 1922.

2 SHEETS-SHEET l.

W. H. LAKE.

GAS aEvERsuvG vALvE. AFPLICA'I'ION I'LILED AUG. 1G. I92I. 1,424,832, PatentedAug. 8, 1922.

2 SHEETS-SHEET 2.

'WYVIL HARTLEY LAKE, OF STOKE-UPON-TRENT, ENGLAND. F

GAS-REVERSING VALVE.

Specification of Letters Patent. gtltgd liking., 8, 1922.,

Application led August 16, 1921. Serial No. 492,854.

(GRANTED UNDER THE IROVSIONS 0F THE ACT 0F MARCH 3, 1921, 41 STAT. L., 1313.) I.

To all LU/710m it may concern.'

Be it known that I, WYvIL HARTLEY LAKE, a subject of the King of Great Britain and Ireland, residing` at Stokeupon-'I`rent, in the county of Staord, England, have invented Improvements in or Relating to Gas-Reversing Valves (for which I have filed application in Great Britain dated March 9th, 1920, No. 151,541), of which the following is a specification.

This invention relates to gas reversing` valves of the kind in which a so-ealled tub or hood, liquid sealed at the perimeter, possesses a partition adapted to occupy different liquid sealed positions between multiple gas ways, and to permit of the gas circulation being altered by raising, turning and lowering movements of the hood the means for effecting which form no part of the present invention.

According to the present invention it is arranged that the hood space comprises two separate arched metal casings or framings adapted to be mounted upon a skeleton plate carrier from which depend the outer apron and intermediate partition requisite `for sealing purposes, the said carrier serving also to firmly support a refractory lining which, by reason of the shape of the casings or framings may be constituted of fire bricks of the shapes in common use. The partition, which dips into the liquid seal, is formed as a trough to contain liquid so that it is not liable to warp if exposed unduly to hot gases as for example when it is raised to break the liquid seal.

Further when it may be desired that the gases and sealing liquid should not be exposed one to the other more than can be avoided the luting regions for the time being unoccupied by the partition of the hood may be covered or protected by members similarly supported by or from the skeleton carrier referred to, it being preferred that such members should themselves be internally liquid cooled.

Whilst the invention can be variously carried into effect it will suflice to describe one constructional example with the aid of the accompanying drawings in which Fig. 1 is a sectional elevation and Fig. 2 a plan with parts removed, of a valve suitable for use with ingot soaking pits for example, Fig. 3 is a part sectional view of a detail. Fig. 4 is a sectional elevation illustrating a modifiJ cation, and Figs. and 6 are views illu:- trating alternative forms which members in Fig. l may, in cross section, assume.

Referring first to Figs. 1, 2, 3, and et, c are two metal casings which, at the centre are of the cross sectional shape shown in Fig. 1, the casing edges cl, being straight from end to end.

The casings a are each shown as attached to the upstanding flange of an internal angle iron e borne b v a ring-like plate f having cross members g and reinforced by outer angle iron rings it, e'. The angle irons c. as will be seen, provide a good support for a brickwork lining to the casings o. The water pan 7c is of ordinary construrtion and receives the apron m as usual, the partition between the casings a which depends into either `the water channel a or 0 however being made as a trough y) suspended from be neath the members f/ and adapted to contain water in a manner broadly well known. To determine the level of .water therein, overflow means may be provided, such as an upstanding pipe arranged. centrally7 of the trough. at one or other or each end thereof or at several of these positions, Fig. 3 illustrating an end overflow pipe fr extending from the trough p through the apron m and discharging into the circular sealing channel of the pan 7c the overflow from which is shown at s..

`In cases where it is desired to avoid the exposure or free exposure of the surface of water in the sealing pan tothe action of the gases being controlled, arms t may, as shown in Fig. 4i, be employed to cover the passages n or o in the pan 7c when the partition p occupies the passages 0 or n respectively. These arms t may be of a section such as shown in Fig. 5 corresponding to the arm in the right hand half of Fig. 4, and communicate with the trough yi' so as to become filled with water, being wide enough to rest upon the walls of the passages fn.` or 0 if desired which may be e'ected by lowering the hood the necessary extent. Or the arms may be of a section such as shown in Fig. 6 correspond'ng to the arm in the left hand half of Fig. 4, and carry a covering u of firebrick or like material, adapted to engage the channel walls if the hood is sufficiently lowered.

1. In a gas reversing valve of the kind.

CIT

referred to, a vertically movable hood comprising two separate arched casings of metal, a trough uniting adjacent edges of such casings, said trough having closed ends, and a liquid seal which the trough aforesaid enters when the hood is in its lowermost position said trough, when elevated as well as when lowered, containing liquid suflicientI to prevent warping.

2. In a gas reversing valve of the kind referred to, a vertically movable hood comprising two separate arched casings of metal, a trough uniting adjacent edges of such casings, said trough having closed ends7 a liquid seal which the trough aforesaid enters when the'hood is in its lowermost position and overilow means whereby the level of liquid supplied to said trough is determined.

3. In a gas reversing valve of the kind referred to, embodying multiple gas ways formed in a water pan having intersecting luting channels, a vertically movable hood comprising two separate arched casings of metal, a trough having closed ends uniting adjacent edges of such casings and adapted to enter any one of said intersecting channels, and hollow varms extending laterally from the trough adapted to be supplied with liquid therefrom and covering the remain# ing luting channels that arey for the time being 'beneath the casings.

4. In a gas reversing valve of the kind referred to, embodying multiple gas ways formed in a water pan having intersecting luting` channels, a vertically movable hood comprising two separate arched casings of metal,"a trough having closed ends uniting adjacent edges of such casings and adapted to enter lany one of said intersectingchan-j 40 adjacent edges of such casings and adapted to enter any one of said intersecting channels, hollow arms extendinglate'rally from the trough adapted to .be supplied with liquid therefrom and covering the remaining luting channels-*that are for the time being beneath the casings, and a protective covering of refractory material surmounti ing said lateral members, said protective covering being adapted to rest upon the edges of the luting regions when the hood 1 is in its lowermost position. i

Signed at Stoke-upon-Trent, England, this twenty-ninthday of July, 1921.

VYVIL HARTLEY LAKE. 

